Build from source, kernel/aosp

[Guest Paul]

Hey guys, i've been out of the loop on this a bit, and unfortunately a Linux f*ck up meant I deleted all my custom scripts.... ARRGGGHHH!

Anyway, if you're having trouble getting boot images working but my superboots are flashing / booting OK, then let me know and i'll help as best I can.

Half considering buying a Liquid again too, lol! :)

P

[Guest mrsoko]

greate news Paul :)

[Guest chunga]

Half considering buying a Liquid again too, lol! B)

wazzup with Nexus? not happy? :)

[Guest Verb]

Regarding the issue you have informed about the release of kernel source code ,further the PVT defcont not being released . Further request to call our Acer Technical support Line as they might help you further .

Actually the quote can be interpreted in other ways. It has quite strange wording and are not even correct sentences.

Perhaps they are just repeating the question you mailed about and are forwarding you to the support line.

Or I'm just graping at straws :)

[Guest bais]

Yeah it doesn't look like they say "The PVT will not be released".

They didn't really answered you I think.

[Guest erto90]

Yeah it doesn't look like they say "The PVT will not be released".

They didn't really answered you I think.

written now,tomorrow i hope in an response,i'll let you informed!!

[Guest pajn]

or is there another way

There is always another way. It just gets harder, more frustrating and very annoying.

@maxisma Is it possible to get the config out of that?

Doesn't you just get a bunch off assembler code? But you maybe can read that freaking language...

EDIT: @Verb they didn't repeat me but bais could have right...

Edited February 1, 2010 by pajn

[Guest Paul]

I've not downloaded the kernel source as yet, is there an 'extract-ikconfig'?

That's used for extracting the kernel config from the kernel binary without needing to run it. It relies on the kernel being compiled with CONFIG_IKCONFIG=y, which is possible, even if they did set CONFIG_IKCONFIG_PROC=n. Fingers crossed eh.

P

[Guest chingy1788]

Anythings possible with reverse engineering... just takes time and effort

maxisma, we have your back xD

[Guest pajn]

I've not downloaded the kernel source as yet, is there an 'extract-ikconfig'?

That's used for extracting the kernel config from the kernel binary without needing to run it. It relies on the kernel being compiled with CONFIG_IKCONFIG=y, which is possible, even if they did set CONFIG_IKCONFIG_PROC=n. Fingers crossed eh.

P

Yes. I didn't know about that, interesting.

[Guest Paul]

I'm not massively optimistic, but it's another thing to rule out. I'm downloading the kernel now, and will give it a go myself too.

P

[Guest erto90]

I've not downloaded the kernel source as yet, is there an 'extract-ikconfig'?

That's used for extracting the kernel config from the kernel binary without needing to run it. It relies on the kernel being compiled with CONFIG_IKCONFIG=y, which is possible, even if they did set CONFIG_IKCONFIG_PROC=n. Fingers crossed eh.

P

yes there is

#!/bin/sh

# extracts .config info from a zImage file

# uses: binoffset (new), dd, zcat, strings, grep

# $arg1 is zImage filename

binoffset="./scripts/binoffset"

test -e $binoffset || cc -o $binoffset ./scripts/binoffset.c || exit 1

IKCFG_ST="0x49 0x4b 0x43 0x46 0x47 0x5f 0x53 0x54"

IKCFG_ED="0x49 0x4b 0x43 0x46 0x47 0x5f 0x45 0x44"

dump_config() {

file="$1"

start=`$binoffset $file $IKCFG_ST 2>/dev/null`

[ "$?" != "0" ] && start="-1"

if [ "$start" -eq "-1" ]; then

return

fi

end=`$binoffset $file $IKCFG_ED 2>/dev/null`

start=`expr $start + 8`

size=`expr $end - $start`

dd if="$file" ibs=1 skip="$start" count="$size" 2>/dev/null | zcat

clean_up

exit 0

}

usage()

{

echo " usage: extract-ikconfig zImage_filename"

}

clean_up()

{

if [ "$TMPFILE" != "" ]; then

rm -f $TMPFILE

fi

}

if [ $# -lt 1 ]

then

usage

exit 1

fi

TMPFILE=`mktemp -t ikconfig-XXXXXX` || exit 1

image="$1"

# vmlinux: Attempt to dump the configuration from the file directly

dump_config "$image"

GZHDR1="0x1f 0x8b 0x08 0x00"

GZHDR2="0x1f 0x8b 0x08 0x08"

# vmlinux.gz: Check for a compressed images

off=`$binoffset "$image" $GZHDR1 2>/dev/null`

[ "$?" != "0" ] && off="-1"

if [ "$off" -eq "-1" ]; then

off=`$binoffset "$image" $GZHDR2 2>/dev/null`

[ "$?" != "0" ] && off="-1"

fi

if [ "$off" -eq "0" ]; then

zcat <"$image" >"$TMPFILE"

dump_config "$TMPFILE"

elif [ "$off" -ne "-1" ]; then

(dd ibs="$off" skip=1 count=0 && dd bs=512k) <"$image" 2>/dev/null | \

zcat >"$TMPFILE"

dump_config "$TMPFILE"

fi

echo "ERROR: Unable to extract kernel configuration information."

echo " This kernel image may not have the config info."

clean_up

exit 1

[Guest maxisma]

damned :)

./extract-ikconfig ~/bo.img-kernel.gz config

ERROR: Unable to extract kernel configuration information.

This kernel image may not have the config info.

Edited February 1, 2010 by maxisma

[Guest Paul]

Bah...

ERROR: Unable to extract kernel configuration information.

This kernel image may not have the config info.

:)

P

[Guest maxisma]

Bah...

:)

P

So, same result as me..

Then we'll really have to reverse-engineer..

This is going to be a torture.

[Guest Paul]

If we have different versions of the liquid kernel, it might be worth trying against them.

P

[Guest erto90]

Bah...

:)

P

badword acer i will not buy any more acer prodcut.

paul,only 1 kernel released as i've saw

Edited February 1, 2010 by erto90

[Guest maxisma]

If we have different versions of the liquid kernel, it might be worth trying against them.

P

I tried it with some of the leaked "RUUs", no luck.

[Guest erto90]

I tried it with some of the leaked "RUUs", no luck.

let me know,if you don't find any good kernel/boot.img only way that remain is the annoyng and long reverse eng?

Edited February 1, 2010 by erto90

[Guest todbld]

badword acer i will not buy any more acer prodcut.

paul,only 1 kernel released as i've saw

ehh i wont say that i truly believe sky is the limit with this device, i just think.....

1. they released this phone knowing it was still beta feeling pressure to enter the market before the new year to generate sales with this branch of acer to generate capital and support

2. they have not figured out how to fix there own problems.... even with the leaks the radio still needs much work, several errors across the board with device

3. as far as this messed up kernel release i think that one they don't want to be proven incompetent when they don't have there own problems fixed yet and i think it is still a mess because it was never ready to begin with

lets face it acer very quickly jumped into the mobile market and i think bit off more than they can chew the hardware is there but they don't yet have the means to support there devices its new to them, hence these vague responces we all get when contacting them, might as well be calling the service providers tech support where the read and go through the manual they have infront of them but can not differ from it or skip a step :) our advantage will be our own impatience where as they feel they have time to fix because they already are selling the devices we have them and want them to reach their potential now !!

[Guest disc0]

Hey guys, i've been out of the loop on this a bit, and unfortunately a Linux f*ck up meant I deleted all my custom scripts.... ARRGGGHHH!

Anyway, if you're having trouble getting boot images working but my superboots are flashing / booting OK, then let me know and i'll help as best I can.

Half considering buying a Liquid again too, lol! :)

P

Paul, I'm glad t see you back here.. I've already compiled a mkbootimg to create a working boot.img but cannot be tested without flashing first..

So, can you tell me what you have done to make the acer bootloader recognize the img?? I think its related with the hash calculated and placed in the header, right??

Can you tell what I need to change to let it be recognized??

Best regards

Edited February 1, 2010 by disc0

[Guest blc]

Paul, can you please share your knowledge how to pack kernel and ramdisk in the proper way that fastboot accepts? Your superboot is the only image that we have seen so far to boot without flashing it (meaning it works with: "fastboot -i 0x0502 boot <superboot.img>"). Other images will always fail the bootloader verification.

PS. We don't necessarily need PVT defconfig, because we can compile the kernel with PVT board type. Of course, it's not guaranteed it will work that way but it might.

[Guest disc0]

Paul, can you please share your knowledge how to pack kernel and ramdisk in the proper way that fastboot accepts? Your superboot is the only image that we have seen so far to boot without flashing it (meaning it works with: "fastboot -i 0x0502 boot <superboot.img>"). Other images will always fail the bootloader verification.

(...)

I want it too :|

(...)

PS. We don't necessarily need PVT defconfig, because we can compile the kernel with PVT board type. Of course, it's not guaranteed it will work that way but it might.

I already tried that but didn't work :\ .. They have must done some magics with the configuration !!!!

Edited February 1, 2010 by disc0

[Guest vache]

C:\liquid>fastboot -i 0x0502 boot plopp

downloading 'boot.img'... OKAY

booting... OKAY

But the phone freeze on "Booting Linux..." :)

Tried and try some options to disable the Acer boot logo.

[Guest CedricGatay]

Keep up the good work vache, kernel doesn't want to compile on my Snow Leopard laptop, will try to install a virtualized environnment asap...